Background model of the CUPID-0 experiment
CUPID-0 is the first large mass array of enriched Zn82Se scintillating low temperature calorimeters, operated at LNGS since 2017. During its first scientific runs, CUPID-0 collected an exposure of 9.95 kg year. Thanks to the excellent rejection of ? particles, we attained the lowest background ever measured with thermal detectors in the energy region where we search for the signature of 82Se neutrinoless double beta decay. In this work we develop a model to reconstruct the CUPID-0 background over the whole energy range of experimental data.